Business Segment Information (Details 2) (USD $) In Millions	3 Months Ended								12 Months Ended
	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2010	Jun. 30, 2010	Mar. 31, 2010	Dec. 31, 2009	Sep. 30, 2009	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2009
Sales and property by geographic region
Sales	$ 1,654.3	$ 1,516.2	$ 1,464.1	$ 1,365.8	$ 1,268.1	$ 1,164.5	$ 1,067.5	$ 1,356.9	$ 6,000.4	$ 4,857.0	$ 4,332.5
Property	561.4							532.5	561.4	536.9	532.5
United States [Member]
Sales and property by geographic region
Sales									2,917.8	2,456.2	2,209.2
Property	446.1							413.7	446.1	424.9	413.7
Canada [Member]
Sales and property by geographic region
Sales									396.2	321.0	257.1
Property	9.2							10.2	9.2	9.7	10.2
Europe Middle East and Africa [Member]
Sales and property by geographic region
Sales									1,267.6	987.3	962.1
Property	42.6							43.7	42.6	40.3	43.7
Asia Pacific [Member]
Sales and property by geographic region
Sales									910.6	724.3	579.3
Property	36.8							38.7	36.8	34.2	38.7
Latin America [Member]
Sales and property by geographic region
Sales									508.2	368.2	324.8
Property	$ 26.7							$ 26.2	$ 26.7	$ 27.8	$ 26.2